gwms/GWMS.UI/Components/CmpFooter.razor.cs

using Microsoft.AspNetCore.Components;
using Microsoft.Extensions.Configuration;
using System;
using System.Threading.Tasks;

namespace GWMS.UI.Components
{
    public partial class CmpFooter : IDisposable
    {
        #region Public Methods

        public void Dispose()
        {
            if (aTimer != null)
            {
                aTimer.Elapsed -= ElapsedTimer;
                aTimer.Stop();
                aTimer.Dispose();
            }
        }

        public void ElapsedTimer(Object source, System.Timers.ElapsedEventArgs e)
        {
            var pUpd = Task.Run(async () =>
            {
                adesso = DateTime.Now;
                await InvokeAsync(StateHasChanged);
            });
            pUpd.Wait();
        }

        public void StartTimer()
        {
            if (aTimer != null)
            {
                aTimer.Stop();
                aTimer.Dispose();
            }
            int tOutPeriod = 1000;
            aTimer = new System.Timers.Timer(tOutPeriod);
            aTimer.Elapsed += ElapsedTimer;
            aTimer.Enabled = true;
            aTimer.Start();
        }

        #endregion Public Methods

        #region Protected Fields

        protected DateTime adesso = DateTime.Now;

        #endregion Protected Fields

        #region Protected Methods

        protected override void OnInitialized()
        {
            var rawVers = typeof(Program).Assembly.GetName().Version;
            version = rawVers != null ? rawVers : new Version("0.0.0.0");
            StartTimer();
        }

        #endregion Protected Methods

        #region Private Fields

        private System.Timers.Timer aTimer = null!;
        private Version? version = null!;

        #endregion Private Fields

        #region Private Properties

        [Inject]
        private IConfiguration Configuration { get; set; }

        #endregion Private Properties
    }
}